JPH0624811A - Heat-ray-reflecting glass structure - Google Patents

Abstract

PURPOSE: To improve one-way reflectivity and thermal insulation characteristic by forming transparent cracks on the inner side surface of an outer flank transparent plate glass substrate formed with specific print ink coating layers and metal (oxide) coating layers on the inner side surface.

CONSTITUTION: The inner side surface of the outer flank transparent plate glass substrate 1 are provided with the metal (oxide) coating layers 2 of 400 to 1800 Å in thickness by coating or plating to intersected stripes or net forms consisting of circular or hexagonal patterns. These coating layers 2 are printed or coated thereon with the black or gray print ink coating layers 21 of circular or hexagonal patterns of 0.04 to 0.18 mm in thickness. The light permeable or transparent crack parts 3' are formed on the inner side surface of the glass substrate 2 and are filled with adhesives. A glass base material 4 is then stuck thereto.

COPYRIGHT: (C)1994,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention eliminates duplicate virtual images or distorted still images that are often found on the inside surface of conventional heat-reflecting glass, while at the same time having a high heat insulating property, high light intensity and one-way reflectivity. It relates to a new improvement in the structure of transparent heat ray (infrared) reflection glass.

[0002]

BACKGROUND OF THE INVENTION Conventional heat-reflecting laminated safety glass, which is widely used for curtain walls in buildings, uses a strong adhesive and laminates two sheets of plate glass substrate having a desired thickness together. It is made by doing.
In the laminated structure, the first transparent outer surface or the inner surface of the colored plate glass substrate is coated with a reflective film, plated or metal by a conventional method such as vacuum deposition, electroless plating, thermal decomposition, or oxidation. Alternatively, it is covered with a metal oxide heat ray reflective layer. And the second plate may be a polyester or polycarbonate plate depending on the particular application.

The reflectivity of a conventional metal or metal oxide reflective film coated on the inner surface of the outer plate glass substrate is generally about 12% to 50%, 2
The polymer resin laminate adhesive layer in the middle of the two substrates is about 0.01 to 3 m / m thick and when viewed from the outside of the building, the curtain wall glass is mirrored. However, since the glass sheet and the resin adhesive layer have different reflectances of 1.52 and 1.48 to 1.6, respectively, a duplicate virtual image or a distorted still image usually causes a feeling of dazzling or visual compression. The images are formed because of the mismatch in reflectance between materials of different densities and because of surface irregularities on the glass sheet that occur during manufacturing. This phenomenon is exacerbated when the outside is brighter than the inside or when the intermediate adhesive layer is thicker. Such adverse effects on the human eye have been mitigated in the past by using dark color heat absorbing glass for the inner plate glass substrate to reduce or mask the indoor image or dazzling light on the reflective film. I have only come. In other words, there is still no other effective means for overcoming or solving the disadvantages such as the above-mentioned duplicate virtual image on the heat ray reflective laminated safety glass.

Recently, the heat ray reflectance is in the range of 12% to 50%, and the transparency is maintained in the range of 40% to 8% with respect to room light. Therefore, in addition to the above disadvantages, as the reflectance of a metal or a metal oxide is increased to 50% or more, less sunlight passes through and the energy for indoor air conditioning can be saved, but the transparency to light intensity decreases. . Therefore, it is the most critical problem for those skilled in the art to find a method of more satisfying the transparency and the reflectance, which are mutually opposing properties.

[0005]

The object of the present invention is to have a high unidirectional reflection and a high heat insulating property, and further have a high reflectance and a high transparency of 84% and 65%, respectively. An object of the present invention is to provide a high-luminance heat ray reflective glass whose value can be arbitrarily adjusted according to various uses.

Another object of the present invention is to provide a heat ray reflective glass which does not produce a duplicate virtual image or a distorted still image on the inner surface of the glass.

A further object of the invention is a thickness of 50 m / m.
Another object of the present invention is to provide a heat ray-reflecting glass having an intermediate adhesive layer up to and having improved safety strength, resistance to permeation and high reticulation.

A further object of the present invention is to add and mix an ultraviolet absorber that absorbs ultraviolet rays, and to provide a glass having an intermediate adhesive layer formed by embedding a metal wire or net therein for the prevention of theft or rupture, Alternatively, a colored glass or decorated polyester or polycarbonate plate may be employed on the inner glass to provide a glass that is in harmony with the interior decoration.

A further object of the present invention is to provide a heat-reflecting glass which has a low defect generation rate and high productivity while exhibiting high privacy, versatility and light-removal scattering.

[0010]

In accordance with the present invention, a conventional heat-reflecting laminated safety glass is of the same type as the outer face sheet of a plate glass substrate coated or plated with a heat-reflecting metal or metal oxide layer. It is improved by laminating another inner surface sheet of the plate glass substrate with an intermediate adhesive layer to form a laminated structure. The essential characteristic of such a light transmitting unidirectional heat ray reflective glass structure is to adopt the following structure. That is, a heat ray-reflecting metal or metal oxide layer is coated on the inner surface of the outer glass, and a black or gray print ink coating layer is further formed on the inner surface of the outer glass by a conventional screen printing method so as to cross a circle or hexagon pattern. Striped or mesh-like printed or coated, and after the printing ink coating layer has dried,
The coated or plated metal or metal oxide coating layer on the plate glass substrate not coated with the printing ink is subjected to conventional electrolysis or acid cleaning. Then, the heat-reflecting metal or metal oxide and the printing ink coating layer having the crossed or meshed pattern of the intended pattern and the uncoated and non-reflective crack portion (this crack is filled with the adhesive during processing). Glass structure.

As described above, the printing ink coating layer according to the present invention is disposed between the metal or metal oxide coating layer having a mirror reflection effect and the intermediate adhesive layer, and the intermediate adhesive layer is the glass of the present invention. It acts as a wall that separates the structure into a unidirectional outer reflective mirror portion and an inner non-reflective laminated glass portion. In this way, the ratio of the size of the pattern of the cross stripes or the mesh arrangement to the uncoated crack portion is, for example, 9: 1,
By changing to 6.5: 3.5 or 5: 5 etc., the outside glass becomes a unidirectional perfect reflection mirror;
Heat reflectance of 84.5% to 6%, transparency of 3
The heat insulating property and the transparency can be arbitrarily adjusted within the range of from% to 65% according to the desired use. The non-reflected light is
It passes through a crevice without a reflective coating layer that is placed surrounded by metal or metal oxide and a printing ink coating layer. Therefore, when looking through the glass from the inside, no duplicate virtual image or distorted still image is seen, and the inside is brightly illuminated by the abundant light passing through the glass; the adhesive layer is thickened to a thickness of about 50 m / m. Well, 30% more than conventional single sheet glass with the same thickness as the present invention
The above is safe. When the thickness is 50 m / m, not only noise resistance but also permeation resistance and high reticulated cracking property
Achieved 00%. Further, the outside glass may be first printed in a tangled, crossed, striped or netted shape to impart scattering ability to the glass, which increases privacy in the room. In addition, the adhesive layer may be admixed with a UV absorber that absorbs UV radiation, or may be embedded with steel wires or nets to provide greater breakage or theft protection than conventionally used glass.

The present invention will be described in detail with reference to the following drawings and specific examples. The scope of the present invention is not limited to the following examples. Various modifications, choices and improvements will become apparent to those skilled in the art within the spirit and scope of the invention.

FIG. 1 shows a conventional heat-reflecting laminated safety glass, which is composed of two sheets of plate glass base material, glass (1)
The first sheet of glass is exposed to the outside of the building and the second sheet of glass (4) is exposed to the inside of the building. The inside of the plate (1) has conventionally been coated or plated with a heat-reflecting metal or metal oxide layer, with an intermediate layer adhered to it. The structure of the glass is a transparent or lightly colored plate glass substrate (1) facing outward; a light-transmitting heat ray-reflecting metal or metal precoated or plated on the inside of the plate glass substrate (1) on the outside surface. Oxide coating layer (2); 2
Intermediate laminated resin adhesive layer between two plate glass substrates
(3); and a multi-layered structure composed of transparent or dark heat ray absorbing glass.

In practical use, the reflectivity is in the range of 12% to 50% and the transparency is 40% to 8% due to composition and processing limitations; therefore, the higher the insulation, the higher the luminous intensity. Will be lower and vice versa. There is also a problem that a duplicate virtual image or a distorted still image appears.

In FIG. 3, (a) shows circles or spots of a metal or metal oxide mirror-like coating layer having a cross-shaped stripe pattern formed on the surface of the outer side plate glass substrate, and the above. The transparent part of the crack (3 ') not coated with the reflective printing ink pattern (indicated by the black line in the figure) is shown, and the figure shows the glass surface of two sheets under the same light intensity condition. At this time, a unidirectional mirror-like reflection state having a transparent line is shown. However, if the brightness is different when viewed from the outside, (a)
As shown in (a '), it becomes a plane mirror in which transparent lines cannot be seen.
Figure (b) is a perspective view of a black or gray print ink coating layer in a crossed stripe pattern consisting of circles or spots on the outer plate glass substrate,
Black or Gray Printing Ink Coating (21)
The white part (3 ') and the white part (3') respectively correspond to the black part of (a) representing the white part (2) and the transparent crevice not coated with the reflective printing ink pattern. Then, the rays of light pass through, and when viewed from the inside, an outdoor view as shown in FIG. (B) can be seen through the transparent crevice.

According to FIG. 4, FIG. 4 (a) is a diagram of a unidirectional reflecting mirror having transparent lines (represented by black lines in the figure) on the surface of the outer side plate glass substrate (1). Figure 3 shows a metal oxide mirror-like reflective coating layer (2) arranged in a mesh with a hexagonal pattern and transparent crevices without coating layer on top. Figure b shows a white reticulate arrangement (3 ') and a black or gray print ink coating (21) on the inner surface plate glass substrate (4).

Embodiment 1 A specific example of the present invention (FIGS. 2 to 4) has the following structure. That is, the outer surface transparent plate glass substrate (1), which may be general glass of sodium calcium silicate or heat treated tempered glass, or sodium or potassium iron exchange tempered glass;

Metal or metal oxide plating layer or coating layer in which intersecting stripes or nets each having a solid circle or hexagonal pattern are regularly arranged
(2), the layer has a heat ray reflection effect, and first, it is plated or coated with a layer of a desired color by a conventional method such as electroless plating, vacuum deposition or thermal decomposition oxidation. Selected from gold, silver, platinum, copper, tin, zinc, chromium, titanium, aluminum, nickel, alloys or oxides thereof and having a thickness in the range of 400Å to 1800Å;

A black or gray printing ink coating layer (21) printed or coated on a reflective metal or metal oxide coating layer (2) in which solid circles are arranged in crossed stripes or nets. The printing ink is made of polyvinyl butyral resin, urethane resin, epoxy resin or methyl acrylate resin or their mixture, and the thickness is 0.0.
4 m / m to 0.18 m / m;

The crevice (3 ') through which light is transmitted, the crevice is a methyl acrylate resin adhesive, a two-component epoxy resin adhesive, a urethane resin adhesive, a one-component ultraviolet curable adhesive or a one-component thermosetting adhesive. Filled with an adhesive selected from.

In the above structure, the print ink coating layer (21) is laminated between the transparent plate glass base material (1) and the inner side plate glass base material (4). The reflectance of the above composition is about 60% in FIG.
The transparency is about 75%, and the transparency is about 30 in Figure 3.
%, About 15% in FIG.

Example 2 The second embodiment of the present invention (FIG. 5) is a light-removing layer having the same pattern as (2), or a light-transmitting, light-colored or dark-tone layer having the pattern (11). Is a coating layer or plating layer on the surface of the transparent plate glass substrate (1)
It has the same heat-reflecting glass structure as in Example 1 except that it is placed or sprayed in contact with (2).

The layer (11) is light-removable by sanding or chemical treatment to obtain a reflection-free diffuser mirror on the surface of the outer glass, or to correspond to the pattern on the coating layers (2) and (3). A light transmissive, lightly tinted or dark layer having a pattern is formed by spraying, in which case the outer image is reflected but visible through the glass.

Example 3 In the third embodiment of the present invention (FIG. 6), the adhesive layer (3) and the inner surface glass substrate (4) are selectively adapted and colored, and the transparent reflective film. Is placed between the adhesive layer (3) and the dark gray inner surface plate glass substrate (4) or in front of the coating layer or the plating layer (2), except for the coating layer (1) on the substrate (1). 2), the arrangement of the print ink coating layer (21) and the adhesive layer (3) is the same as the specific example of FIG. Then, in addition to the above benefits, the heat insulating effect of the heat ray reflective glass composition is further enhanced.

[0025]

EFFECTS OF THE INVENTION The glass structure of the present invention does not generate a duplicated virtual image and a distorted still image, and it is possible to obtain sufficiently satisfactory values, which have not been achieved hitherto, as the contradictory characteristics of reflectance and transmittance.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a conventional heat ray reflective laminated safety glass structure.

FIG. 2 is an enlarged cross-sectional view of a reflective and printed ink layer having a solid circular or hexagonal crossed stripe or net placement pattern.

FIG. 3 is a perspective view of an embodiment of the invention consisting of circles and spots seen from the outside and the inside.

FIG. 4 is a diagram showing a hexagonal pattern adopted in the present invention when viewed from the outside and the inside.

FIG. 5 is an enlarged cross-sectional view of a second specific example of the present invention.

FIG. 6 is an enlarged cross-sectional view of a third example of the present invention.

[Explanation of symbols]

1: Glass substrate 2: Coating layer 3: Adhesive layer
4: Glass substrate 21: Printing ink coating layer 3 ': Rip

Claims (7)

[Claims] 1. A) a metal or metal oxide coating layer having a regular crossed stripe or mesh arrangement of circles or hexagonal patterns coated or plated on the inside surface of an outer transparent plate glass substrate; b. ) A black or gray printing ink coating layer having the same pattern as (a) further sprayed or printed on the pattern of the above metal or metal oxide coating layer; and c) a regular cross pattern of circles or hexagonal patterns. Striped or reticulated metal or metal oxide coating layer and black or gray print ink coating of the same pattern without outer surface transparent plate consisting of light transmissive or transparent crevices on the inner surface of the glass substrate. Characterized by Line reflective glass structure. 2. The metal or metal oxide is gold, silver, platinum, copper, tin, zinc, chromium, titanium, aluminum,
The heat-reflecting glass structure according to claim 1, wherein the heat-reflecting glass structure is selected from nickel, alloys thereof, or oxides thereof and is formed to a thickness of 400 Å to 1800 Å. 3. A black or gray print ink sprayed or printed by screen painting is selected from one of polyvinyl butyral resin, urethane resin, epoxy resin, methyl acrylate resin or mixtures thereof, and 0.04 m / m to 0.18 m
The heat-reflecting glass structure according to claim 1, having a thickness of / m. 4. The printing ink coating layer is embedded between the metal or metal oxide coating layer and the intermediate adhesive layer, and the outside glass is a one-way reflecting mirror and the inside glass is non-reflective. 1 to 3
The heat-reflecting glass structure described. 5. The pattern size of the metal or metal oxide layer and the printing ink coating layer is 9/1, 6.5 / 3.5 or 5/5, depending on the desired use needs, 84 Reflectance in the range of 6% to 6% and 3
The heat-reflecting glass structure according to claim 1, 2 or 4, which has a transmittance in the range of% to 65%. 6. The heat-reflecting glass structure according to claim 1, wherein the intermediate adhesive layer has a thickness of up to 50 m / m. 7. The heat ray reflective glass structure according to claim 1, wherein the intermediate adhesive layer is admixed with an ultraviolet absorber and embedded with steel or mesh wire according to the intended use.